jsonToComma.js

function e(a) {
    return '"'+a+'"';
}
/*
    > convert([{a: 1, b: 2}, {a: 3, b:4}]);
    '"a","b"\n"1","2"\n"3","4"'
    > convert([{a: 1, b: 2}, {a: 3, b:4}]);
    '"a","b"\n"1","2"\n"3","4"'
*/
function convert(j) {
    var att = [];
    for(var a in j[0]) {
        att.push(a);
    }
    result = att.map(e).join(',')+'\n';
    result += j.map(function(i){
        return att.map(function(a) {
            return e(i[a]);
        }).join(',');
    }).join('\n');
    return result;
};